remcos | db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7c

General

Target

db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe
Size

1.3MB
MD5

5d1f811b1a4c28f179e5b3ef28a73890
SHA1

7535360f441787271f0d9637da6a253feb3f4efd
SHA256

db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7c
SHA512

6636565fd5e4ebc15acc9126a605598a62bd978adf4655e8fdefeabb039f9391d0f70fff7f7c281c1145f6170218199e3357859bd5c1e1e6a68e88a6ffc84b85
SSDEEP

12288:5cwvBYnX3HHvb+Qmj1mZ/srMF5Zmoza2Cr71PW7rYNzY/z8CCCQ2annc2AuIEGxn:5I3HphrYRYXxaEEMVj/RTQfZwSi1

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

154.216.19.243:50417

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-UG4F0K
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1356	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83
PID 1520 wrote to memory of 1356	1520	db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe	83

C:\Users\Admin\AppData\Local\Temp\db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe
"C:\Users\Admin\AppData\Local\Temp\db35415d95d7c01060893c0fdadd8e5dbf436c4fc34adad266150175b402af7cN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
8a9baeec467d5403f5b8c913a0cd3134

SHA1
f3d339ef146a527ae9db681872dfb765790aa130

SHA256
60bfd3ad21ab5a8811eef2c91176c38c73cc40acad5c81eab1dcb060acbbf0aa

SHA512
50eb7fafd13872028f7cfc087db5473ad0cf12693e7c1bb63d304b841841d6774f20d12fc6b84f4f95d85b7693656f98d141379cf2ddff7d607ed824c15dccce

Download Submit
memory/1356-13-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-22-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-3-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-5-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-6-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-14-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-8-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-15-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-47-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-10-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-16-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-46-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1356-30-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/1520-2-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download
memory/1520-0-0x00000000746AE000-0x00000000746AF000-memory.dmp

Filesize
4KB

Download
memory/1520-1-0x0000000000820000-0x000000000096E000-memory.dmp

Filesize
1.3MB

Download
memory/1520-9-0x00000000746A0000-0x0000000074E50000-memory.dmp

Filesize
7.7MB

Download

Analysis

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